Ben Armstrong Microsoft
Legacy Devices RemovedReplacement DevicesEnhancements IDE ControllerVirtual SCSI ControllerBoot from VHDx ( 64TB max size, online resize) IDE CD-ROMVirtual SCSI CD-ROMHot add/remove Legacy BIOSUEFI firmwareSecure Boot Legacy NICSynthetic NICNetwork boot with IPv4 & IPv6 Floppy & DMA ControllerNo floppy support UART (COM Ports)Optional UART for debuggingFaster and more reliable i8042 keyboard controllerSoftware based inputNo emulation – reduced resources PS/2 keyboardSoftware based keyboardNo emulation – reduced resources PS/2 mouseSoftware based mouseNo emulation – reduced resources S3 videoSoftware based videoNo emulation – reduced resources PCI BusVMBus Programmable Interrupt Controller (PIC)No longer required Programmable Interrupt Timer (PIT)No longer required Super I/O deviceNo longer required
File Based Storage Block Storage VHDX Guest Clustering Guest Clustering with commodity storage Sharing VHDX files provides shared storage for Hyper-V Failover Clustering Maintains separation between infrastructure and tenants Virtual SAS VM presented a shared virtual SAS disk Appears as shared SAS disk to VM Cluster Shared Volumes (CSV) on block storage Scale-Out File Server for file based storage